Pipe-coupling.



W. F. DREW.

PIPE COUPLING.

APPLIOATION FILED 001'. 1, 190a.

Patented Apr. 12,1910.

#- 49W Inventor:

wennnnr. nnnw, on NEW YORK, N. Y.

PIPE-COUPLING.

Specification of Letters Patent.

Patented Apr. 12, 1910.

Application filed October 1, 1908. Serial No. 455,690.

To all whom it may concern: I

Be it known that I, WARREN F. DREW, a citizen of the United States, and resident of New York, N. Y., have invented certain new and useful Improvements in Pipe-Couplings, of which the following is a specification.

My invention relates to couplings for pipes and its novelty consists in the construction and adaptation of the parts as will be more fully hereinafter pointed out.

In Letters Patent of the United States No. 67 2,598 issued to me April 23, 1901 there is described a pipe coupling upon which my present invention is .an improvement. The coupling sections shown in that patent were difficult to cast and difficult also to uncouple. My present invention obviates both of these disadvantages and enables me to cast both sections more easily and readily to disassemble or uncouple the parts after they have been joined to ether.

In the drawings, Figure 1 represents two sections joined together, an alternate position of one section being indicated in dotted outline; Fi 2 is a central longitudinal section throug' the'parts shown in Fig. 1.

In the drawings, 10 is one section of my improved pipe coupling and 11 is the other section thereof. Both of these sections terminate outwardly in planes a; and y at right angles to their axial lines at that point and both are inwardlyv threaded at such ter-' minals in order to engage with the pi es or other structural elements adapted to e secured together thereby. Both of the sections are tubular in construction and both decrease in cross sectional area and inward diameter from their terminal planes :0 and 3 and both are identically formed until they reach planes m--m and H atangles of 15 delarge enough to receive wholly within them the said pipes to be coupled, it being unnecessary to weaken the joint by decreasing the thicknessof the. pi es to be coupled or of the outer threaded en s of the coupling sections as in former constructions, in order to accommodate the threaded ends of pipes gees respectively to the planes a: and 'y."

having substantially the same bore as, the' 8Ct1OIlS of the couplings at their point of uncture. The bore-of the sections being of identical form and size, the same core box may be used in casting them. At the plane 472% the section 10 is expanded to form a flange 100. At the plane 71r-7b the section 11 is similarly expanded to form a flange 110 externally threaded at 111. A circular ledge 101 on the flange 100 and a corresponding recess 112 on the flange 110 serve to position the sections with respect to each other. A acking ring 12 of elastic material is adapte to prevent. leakage from the contacting surface of the two sections. A circumferential ring 13 is provided with threads 130 at a portion ofits inner surface to engage the threaded surface 111 of the section 10. A further portion 131 of the inner surface of this ring is smooth and is adapted to extend over and embrace the outer'surface of the flange 100. It will be noted that the plane of contact of the two sections is at right angles to their common axial line at that point and at an angle of 45 with each lane w and y.

In assem ling the sections 'to form a coup- 10 'so that its surface 131 is in contact with -the smooth outer surface of the flange 100.

The other section 11 of the coupling isbrought to contact with the section 10 and the threaded portion 130 of the ring' 13 is caused to engage with the threaded ortion 111 of the section 11. A tight joint is readily secured bytightening the ring 13 which has outer plane angular surfaces 132 to serve.

as a nut. It is obvious that by loosening this ring. by a suitable tool the sections 10 and 11 may be turned at any angle with respect to each other, as indicatedin Figs. 1 and 2 by-the dotted lines and then tightened into their new position. In order to disengage the ring 13 from the sections and disassemble the parts it is necessary that. the

space a'between the outer'surface of the ring 13 on its side toward the section 10 and the outer wall of that section should be sufficient to permit the disengagement of the outermost thread of the mug 13 with the outermost thread of the section 11. In other words, that this space should equal the width of the threaded portion of the ring 13. Otherwise no disengagement could take place.

My device forms a cheap form of coupling, readily made, assembled and disassembled and adaptable to a great variety of,

the pipes and remain there, which makes such forms of coupling inapplicable for use where solid materials are apt to be contained in the fluid, for instance, as in sewer pipes, or in pipes used for the transportation of wine or beer. 7

By referring to the drawing in the present instance, it will be noticed that the circumferential nut 13 would be entirely inclosed within a cylinder of a diameter to inclose the fittings 10 and 11. This is due also to the reduction of the diameter of the fittings toward their abutting ends and such reduction enables a nut to be applied to couple fittings together Without exceeding in diameter the width of the'fittings in a plane at rightangles to the axial line. This construction enables the coupling to be inserted between two closely placed parallel walls, or inside of a larger pipe, or the like,

which is impossible with the constructions now known.

What I claim as new is I 1. In a device of the class described, a flanged fitting, a threaded nut having a flange, cooperating with the flange of the fitting, thefitting having a bend commencing substantially at its flange, the distance between the flanged end of the nut and the portion of the bend opposite thereto being 2; Ina device of the class described, an elbow fitting having the elbow madein two parts, one flanged and the other threaded,

and a flanged nut connecting the two parts, the distance between the flanged end of the nut and the opposing portion of the wall of the part upon which it is carried being not less than the depth of the threaded portion of the nut.

3. In a device of the class described, an elbow fitting comprising two similarly shaped parts, one flanged, and the other threaded, and a flanged nut connecting the two parts, the distance between the ends of the nut parts, one flanged, and the other threaded, fitting and the opposing portions of the walls of the fittings being substantially equal and not less than the depth of the threaded portion of the nut.

4. In a device of the class described, an elbow fitting having the elbow made intwo parts, the adjoining ends of which are adapted to be connected in axial alinement, said parts flaring outwardly from their at taching portions, one of said parts being flanged and the other threaded, and a flanged nut connectin the two vparts, the distance between the flange of the nut and the opposing portion of the wall of the part on which it is carried being not less than the depth of the threaded portion of the nut.

\Vitness my hand this 30th day of September 1908, at New York, NTY.

WARREN F. DREW. lVitnesses:

T. W. SPRINGMEYER, MAY HUGHES. 

